import Vue from 'vue'
import VueRouter from 'vue-router'
// import Login from '../components/Login.vue'
const Login = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Login.vue')
// import Home from '../components/Home.vue'
const Home = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Home.vue')
// import Welcome from '../components/Welcome.vue'
const Welcome = () => import(/* webpackChunkName: "login_home_welcome" */ '../components/Welcome.vue')

// import User from '../components/user/User.vue'
const User = () => import(/* webpackChunkName: "User_Rights_Roles" */ '../components/user/User.vue')
// import Rights from '../components/power/Rights.vue'
const Rights = () => import(/* webpackChunkName: "User_Rights_Roles" */ '../components/power/Rights.vue')
// import Roles from '../components/power/Roles.vue'
const Roles = () => import(/* webpackChunkName: "User_Rights_Roles" */ '../components/power/Roles.vue')

// import Cate from '../components/goods/Cate.vue'
const Cate = () => import(/* webpackChunkName: "Cate_Params" */ '../components/goods/Cate.vue')
// import Params from '../components/goods/Params.vue'
const Params = () => import(/* webpackChunkName: "Cate_Params" */ '../components/goods/Params.vue')

// import List from '../components/goods/List.vue'
const List = () => import(/* webpackChunkName: "List_Add" */ '../components/goods/List.vue')
// import Add from '../components/goods/Add.vue'
const Add = () => import(/* webpackChunkName: "List_Add" */ '../components/goods/Add.vue')

// import Order from '../components/order/Order.vue'
const Order = () => import(/* webpackChunkName: "Order_Report" */ '../components/order/Order.vue')
// import Report from '../components/report/Report.vue'
const Report = () => import(/* webpackChunkName: "Order_Report" */ '../components/report/Report.vue')

Vue.use(VueRouter)

const router = new VueRouter({
  mode: 'history',
  routes: [
    { path: '/', redirect: '/login' },
    { path: '/login', component: Login },
    { path: '/home', 
      component: Home, 
      redirect: '/welcome', 
      children: [
        {path: '/welcome', component: Welcome},
        {path: '/users', component: User},
        {path: '/rights', component: Rights},
        {path: '/roles', component: Roles},
        {path: '/categories', component: Cate},
        {path: '/params', component: Params},
        {path: '/goods', component: List},
        {path: '/goods/add', component: Add},
        {path: '/orders', component: Order},
        {path: '/reports', component: Report}
    ]},
    
  ]
})

// 挂载路由导航首位全局导航守卫验证用户是否登录
router.beforeEach((to, from, next) => {
  // to是将要访问的路径
  // from 代表从那个路径跳转出来
  // next 是一个函数 表示放行
          // next() 放行  next('/login') 表示强制跳转
          if(to.path === '/login') return next();
          // 获取token
          const tokenStr = window.sessionStorage.getItem('token')
          if(!tokenStr) return next('/login')
          next()
})
export default router